17897840

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{547}}^1$

素因数の和:969

約数の個数: 40

約数和(自身を含む): 41790480

約数和(自身を除く): 23892640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 547, 818, 1094, 1636, 2045, 2188, 2735, 3272, 4090, 4376, 5470, 6544, 8180, 8752, 10940, 16360, 21880, 32720, 43760, 223723, 447446, 894892, 1118615, 1789784, 2237230, 3579568, 4474460, 8948920, 17897840]

約数ペア:

[(1, 17897840), (2, 8948920), (4, 4474460), (5, 3579568), (8, 2237230), (10, 1789784), (16, 1118615), (20, 894892), (40, 447446), (80, 223723), (409, 43760), (547, 32720), (818, 21880), (1094, 16360), (1636, 10940), (2045, 8752), (2188, 8180), (2735, 6544), (3272, 5470), (4090, 4376)]